/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-11 21:03:07,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 21:03:07,814 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 21:03:07,848 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 21:03:07,848 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 21:03:07,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 21:03:07,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 21:03:07,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 21:03:07,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 21:03:07,862 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 21:03:07,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 21:03:07,864 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 21:03:07,864 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 21:03:07,866 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 21:03:07,867 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 21:03:07,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 21:03:07,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 21:03:07,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 21:03:07,875 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 21:03:07,876 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 21:03:07,878 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 21:03:07,879 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 21:03:07,879 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 21:03:07,880 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 21:03:07,886 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 21:03:07,886 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 21:03:07,886 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 21:03:07,887 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 21:03:07,888 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 21:03:07,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 21:03:07,888 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 21:03:07,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 21:03:07,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 21:03:07,890 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 21:03:07,891 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 21:03:07,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 21:03:07,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 21:03:07,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 21:03:07,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 21:03:07,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 21:03:07,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 21:03:07,893 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-11 21:03:07,920 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 21:03:07,920 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 21:03:07,921 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 21:03:07,922 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 21:03:07,922 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 21:03:07,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 21:03:07,923 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 21:03:07,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 21:03:07,923 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 21:03:07,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 21:03:07,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 21:03:07,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 21:03:07,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 21:03:07,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 21:03:07,924 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 21:03:07,924 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 21:03:07,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 21:03:07,924 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 21:03:07,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 21:03:07,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 21:03:07,925 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 21:03:07,925 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 21:03:07,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 21:03:07,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 21:03:07,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 21:03:07,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 21:03:07,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 21:03:07,926 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 21:03:07,926 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 21:03:07,926 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 21:03:07,926 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 21:03:07,926 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-11 21:03:08,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 21:03:08,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 21:03:08,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 21:03:08,228 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 21:03:08,228 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 21:03:08,229 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.i [2022-12-11 21:03:09,204 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 21:03:09,481 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 21:03:09,482 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.i [2022-12-11 21:03:09,498 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e4611a8e/2ad53a4eb39e493ca10a58911754c732/FLAGd709eeef3 [2022-12-11 21:03:09,507 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e4611a8e/2ad53a4eb39e493ca10a58911754c732 [2022-12-11 21:03:09,509 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 21:03:09,510 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 21:03:09,510 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 21:03:09,510 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 21:03:09,512 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 21:03:09,513 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 09:03:09" (1/1) ... [2022-12-11 21:03:09,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f179388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:03:09, skipping insertion in model container [2022-12-11 21:03:09,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 09:03:09" (1/1) ... [2022-12-11 21:03:09,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 21:03:09,545 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 21:03:09,666 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.i[945,958] [2022-12-11 21:03:09,776 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:03:09,777 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:03:09,777 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:03:09,777 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:03:09,778 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:03:09,778 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:03:09,778 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:03:09,778 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:03:09,779 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:03:09,779 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:03:09,779 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:03:09,779 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:03:09,780 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:03:09,780 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:03:09,780 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:03:09,780 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:03:09,780 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:03:09,781 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:03:09,781 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:03:09,781 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:03:09,781 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:03:09,781 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:03:09,781 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:03:09,782 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:03:09,788 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:03:09,788 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:03:09,789 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:03:09,789 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:03:09,790 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:03:09,791 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:03:09,792 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 21:03:09,799 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 21:03:09,809 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.i[945,958] [2022-12-11 21:03:09,831 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:03:09,831 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:03:09,832 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:03:09,832 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:03:09,832 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:03:09,832 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:03:09,832 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:03:09,832 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:03:09,833 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:03:09,833 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:03:09,833 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:03:09,833 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:03:09,833 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:03:09,833 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:03:09,833 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:03:09,834 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:03:09,834 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:03:09,834 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:03:09,834 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:03:09,834 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:03:09,834 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:03:09,835 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:03:09,835 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:03:09,837 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:03:09,840 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:03:09,840 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:03:09,840 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:03:09,841 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:03:09,841 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 21:03:09,843 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 21:03:09,846 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 21:03:09,874 INFO L208 MainTranslator]: Completed translation [2022-12-11 21:03:09,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:03:09 WrapperNode [2022-12-11 21:03:09,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 21:03:09,876 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 21:03:09,876 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 21:03:09,876 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 21:03:09,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:03:09" (1/1) ... [2022-12-11 21:03:09,902 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:03:09" (1/1) ... [2022-12-11 21:03:09,919 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2022-12-11 21:03:09,919 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 21:03:09,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 21:03:09,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 21:03:09,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 21:03:09,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:03:09" (1/1) ... [2022-12-11 21:03:09,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:03:09" (1/1) ... [2022-12-11 21:03:09,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:03:09" (1/1) ... [2022-12-11 21:03:09,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:03:09" (1/1) ... [2022-12-11 21:03:09,939 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:03:09" (1/1) ... [2022-12-11 21:03:09,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:03:09" (1/1) ... [2022-12-11 21:03:09,940 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:03:09" (1/1) ... [2022-12-11 21:03:09,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:03:09" (1/1) ... [2022-12-11 21:03:09,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 21:03:09,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 21:03:09,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 21:03:09,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 21:03:09,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:03:09" (1/1) ... [2022-12-11 21:03:09,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 21:03:09,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 21:03:09,975 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-11 21:03:09,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-11 21:03:10,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 21:03:10,003 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-11 21:03:10,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 21:03:10,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 21:03:10,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 21:03:10,004 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-11 21:03:10,004 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-11 21:03:10,004 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-11 21:03:10,004 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-11 21:03:10,004 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-11 21:03:10,004 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-11 21:03:10,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 21:03:10,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-11 21:03:10,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 21:03:10,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 21:03:10,005 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-11 21:03:10,144 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 21:03:10,146 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 21:03:10,245 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 21:03:10,249 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 21:03:10,249 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-11 21:03:10,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 09:03:10 BoogieIcfgContainer [2022-12-11 21:03:10,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 21:03:10,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 21:03:10,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 21:03:10,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 21:03:10,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 09:03:09" (1/3) ... [2022-12-11 21:03:10,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6428baaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 09:03:10, skipping insertion in model container [2022-12-11 21:03:10,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 09:03:09" (2/3) ... [2022-12-11 21:03:10,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6428baaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 09:03:10, skipping insertion in model container [2022-12-11 21:03:10,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 09:03:10" (3/3) ... [2022-12-11 21:03:10,257 INFO L112 eAbstractionObserver]: Analyzing ICFG safe004_tso.i [2022-12-11 21:03:10,270 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 21:03:10,271 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-11 21:03:10,271 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 21:03:10,336 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-11 21:03:10,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2022-12-11 21:03:10,436 INFO L130 PetriNetUnfolder]: 2/81 cut-off events. [2022-12-11 21:03:10,436 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-11 21:03:10,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2022-12-11 21:03:10,440 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2022-12-11 21:03:10,442 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2022-12-11 21:03:10,459 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 21:03:10,464 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6e4f999, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 21:03:10,465 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-11 21:03:10,497 INFO L130 PetriNetUnfolder]: 1/68 cut-off events. [2022-12-11 21:03:10,497 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-11 21:03:10,497 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:03:10,498 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:03:10,499 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 21:03:10,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:03:10,504 INFO L85 PathProgramCache]: Analyzing trace with hash 2061681309, now seen corresponding path program 1 times [2022-12-11 21:03:10,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:03:10,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336917997] [2022-12-11 21:03:10,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:03:10,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:03:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:03:11,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 21:03:11,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:03:11,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336917997] [2022-12-11 21:03:11,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336917997] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:03:11,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:03:11,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 21:03:11,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388704132] [2022-12-11 21:03:11,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:03:11,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 21:03:11,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:03:11,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 21:03:11,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-11 21:03:11,268 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 84 [2022-12-11 21:03:11,272 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 147 flow. Second operand has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:03:11,272 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:03:11,272 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 84 [2022-12-11 21:03:11,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:03:11,497 INFO L130 PetriNetUnfolder]: 145/423 cut-off events. [2022-12-11 21:03:11,498 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-11 21:03:11,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 700 conditions, 423 events. 145/423 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2149 event pairs, 15 based on Foata normal form. 15/425 useless extension candidates. Maximal degree in co-relation 669. Up to 134 conditions per place. [2022-12-11 21:03:11,503 INFO L137 encePairwiseOnDemand]: 76/84 looper letters, 17 selfloop transitions, 3 changer transitions 31/105 dead transitions. [2022-12-11 21:03:11,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 105 transitions, 327 flow [2022-12-11 21:03:11,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 21:03:11,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 21:03:11,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 649 transitions. [2022-12-11 21:03:11,518 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8584656084656085 [2022-12-11 21:03:11,521 INFO L295 CegarLoopForPetriNet]: 78 programPoint places, 8 predicate places. [2022-12-11 21:03:11,521 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 105 transitions, 327 flow [2022-12-11 21:03:11,523 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 74 transitions, 203 flow [2022-12-11 21:03:11,523 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 74 transitions, 203 flow [2022-12-11 21:03:11,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:03:11,524 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:03:11,524 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:03:11,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-11 21:03:11,525 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 21:03:11,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:03:11,526 INFO L85 PathProgramCache]: Analyzing trace with hash -226521378, now seen corresponding path program 1 times [2022-12-11 21:03:11,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:03:11,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70941198] [2022-12-11 21:03:11,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:03:11,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:03:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:03:11,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 21:03:11,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:03:11,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70941198] [2022-12-11 21:03:11,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70941198] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:03:11,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:03:11,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 21:03:11,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071026128] [2022-12-11 21:03:11,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:03:11,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 21:03:11,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:03:11,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 21:03:11,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-11 21:03:11,817 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 84 [2022-12-11 21:03:11,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 74 transitions, 203 flow. Second operand has 7 states, 7 states have (on average 63.0) internal successors, (441), 7 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:03:11,818 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:03:11,818 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 84 [2022-12-11 21:03:11,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:03:12,110 INFO L130 PetriNetUnfolder]: 383/913 cut-off events. [2022-12-11 21:03:12,111 INFO L131 PetriNetUnfolder]: For 118/482 co-relation queries the response was YES. [2022-12-11 21:03:12,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2028 conditions, 913 events. 383/913 cut-off events. For 118/482 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5080 event pairs, 21 based on Foata normal form. 29/908 useless extension candidates. Maximal degree in co-relation 1990. Up to 439 conditions per place. [2022-12-11 21:03:12,118 INFO L137 encePairwiseOnDemand]: 73/84 looper letters, 29 selfloop transitions, 11 changer transitions 52/141 dead transitions. [2022-12-11 21:03:12,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 141 transitions, 617 flow [2022-12-11 21:03:12,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-11 21:03:12,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-11 21:03:12,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 878 transitions. [2022-12-11 21:03:12,120 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8040293040293041 [2022-12-11 21:03:12,121 INFO L295 CegarLoopForPetriNet]: 78 programPoint places, 14 predicate places. [2022-12-11 21:03:12,121 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 141 transitions, 617 flow [2022-12-11 21:03:12,124 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 89 transitions, 335 flow [2022-12-11 21:03:12,124 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 89 transitions, 335 flow [2022-12-11 21:03:12,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 63.0) internal successors, (441), 7 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:03:12,125 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:03:12,125 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:03:12,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-11 21:03:12,125 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 21:03:12,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:03:12,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1277558689, now seen corresponding path program 1 times [2022-12-11 21:03:12,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:03:12,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113854475] [2022-12-11 21:03:12,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:03:12,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:03:12,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:03:12,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 21:03:12,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:03:12,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113854475] [2022-12-11 21:03:12,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113854475] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:03:12,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:03:12,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 21:03:12,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698541515] [2022-12-11 21:03:12,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:03:12,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 21:03:12,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:03:12,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 21:03:12,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-11 21:03:12,298 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 84 [2022-12-11 21:03:12,298 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 89 transitions, 335 flow. Second operand has 7 states, 7 states have (on average 63.142857142857146) internal successors, (442), 7 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:03:12,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:03:12,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 84 [2022-12-11 21:03:12,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:03:12,501 INFO L130 PetriNetUnfolder]: 232/678 cut-off events. [2022-12-11 21:03:12,501 INFO L131 PetriNetUnfolder]: For 164/398 co-relation queries the response was YES. [2022-12-11 21:03:12,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1827 conditions, 678 events. 232/678 cut-off events. For 164/398 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3735 event pairs, 7 based on Foata normal form. 24/692 useless extension candidates. Maximal degree in co-relation 1782. Up to 292 conditions per place. [2022-12-11 21:03:12,505 INFO L137 encePairwiseOnDemand]: 72/84 looper letters, 34 selfloop transitions, 18 changer transitions 54/155 dead transitions. [2022-12-11 21:03:12,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 155 transitions, 903 flow [2022-12-11 21:03:12,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-11 21:03:12,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-11 21:03:12,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 872 transitions. [2022-12-11 21:03:12,507 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7985347985347986 [2022-12-11 21:03:12,508 INFO L295 CegarLoopForPetriNet]: 78 programPoint places, 17 predicate places. [2022-12-11 21:03:12,508 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 155 transitions, 903 flow [2022-12-11 21:03:12,511 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 101 transitions, 514 flow [2022-12-11 21:03:12,511 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 101 transitions, 514 flow [2022-12-11 21:03:12,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 63.142857142857146) internal successors, (442), 7 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:03:12,512 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:03:12,512 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:03:12,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-11 21:03:12,512 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 21:03:12,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:03:12,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1270910944, now seen corresponding path program 1 times [2022-12-11 21:03:12,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:03:12,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29853108] [2022-12-11 21:03:12,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:03:12,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:03:12,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:03:12,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 21:03:12,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:03:12,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29853108] [2022-12-11 21:03:12,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29853108] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:03:12,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:03:12,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-11 21:03:12,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953902354] [2022-12-11 21:03:12,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:03:12,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-11 21:03:12,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:03:12,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-11 21:03:12,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-11 21:03:12,645 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 84 [2022-12-11 21:03:12,645 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 101 transitions, 514 flow. Second operand has 8 states, 8 states have (on average 63.0) internal successors, (504), 8 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:03:12,646 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:03:12,646 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 84 [2022-12-11 21:03:12,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:03:12,859 INFO L130 PetriNetUnfolder]: 203/751 cut-off events. [2022-12-11 21:03:12,859 INFO L131 PetriNetUnfolder]: For 258/922 co-relation queries the response was YES. [2022-12-11 21:03:12,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2242 conditions, 751 events. 203/751 cut-off events. For 258/922 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4849 event pairs, 0 based on Foata normal form. 33/775 useless extension candidates. Maximal degree in co-relation 2190. Up to 306 conditions per place. [2022-12-11 21:03:12,863 INFO L137 encePairwiseOnDemand]: 73/84 looper letters, 33 selfloop transitions, 19 changer transitions 55/156 dead transitions. [2022-12-11 21:03:12,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 156 transitions, 1135 flow [2022-12-11 21:03:12,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-11 21:03:12,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-11 21:03:12,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 869 transitions. [2022-12-11 21:03:12,865 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7957875457875457 [2022-12-11 21:03:12,866 INFO L295 CegarLoopForPetriNet]: 78 programPoint places, 20 predicate places. [2022-12-11 21:03:12,866 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 156 transitions, 1135 flow [2022-12-11 21:03:12,868 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 101 transitions, 607 flow [2022-12-11 21:03:12,869 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 101 transitions, 607 flow [2022-12-11 21:03:12,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 63.0) internal successors, (504), 8 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:03:12,869 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:03:12,869 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:03:12,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-11 21:03:12,869 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 21:03:12,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:03:12,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1130666784, now seen corresponding path program 2 times [2022-12-11 21:03:12,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:03:12,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832259584] [2022-12-11 21:03:12,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:03:12,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:03:12,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:03:13,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 21:03:13,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:03:13,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832259584] [2022-12-11 21:03:13,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832259584] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:03:13,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:03:13,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 21:03:13,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536703032] [2022-12-11 21:03:13,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:03:13,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 21:03:13,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:03:13,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 21:03:13,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-11 21:03:13,011 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 84 [2022-12-11 21:03:13,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 101 transitions, 607 flow. Second operand has 7 states, 7 states have (on average 66.85714285714286) internal successors, (468), 7 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:03:13,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:03:13,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 84 [2022-12-11 21:03:13,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:03:13,118 INFO L130 PetriNetUnfolder]: 127/497 cut-off events. [2022-12-11 21:03:13,119 INFO L131 PetriNetUnfolder]: For 369/964 co-relation queries the response was YES. [2022-12-11 21:03:13,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1691 conditions, 497 events. 127/497 cut-off events. For 369/964 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2845 event pairs, 0 based on Foata normal form. 20/510 useless extension candidates. Maximal degree in co-relation 1634. Up to 202 conditions per place. [2022-12-11 21:03:13,121 INFO L137 encePairwiseOnDemand]: 75/84 looper letters, 19 selfloop transitions, 4 changer transitions 50/126 dead transitions. [2022-12-11 21:03:13,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 126 transitions, 987 flow [2022-12-11 21:03:13,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-11 21:03:13,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-11 21:03:13,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 488 transitions. [2022-12-11 21:03:13,122 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8299319727891157 [2022-12-11 21:03:13,123 INFO L295 CegarLoopForPetriNet]: 78 programPoint places, 18 predicate places. [2022-12-11 21:03:13,123 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 126 transitions, 987 flow [2022-12-11 21:03:13,124 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 76 transitions, 425 flow [2022-12-11 21:03:13,124 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 76 transitions, 425 flow [2022-12-11 21:03:13,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 66.85714285714286) internal successors, (468), 7 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:03:13,124 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:03:13,124 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:03:13,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-11 21:03:13,125 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 21:03:13,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:03:13,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1284966222, now seen corresponding path program 1 times [2022-12-11 21:03:13,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:03:13,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742571728] [2022-12-11 21:03:13,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:03:13,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:03:13,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:03:13,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 21:03:13,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:03:13,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742571728] [2022-12-11 21:03:13,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742571728] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:03:13,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:03:13,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 21:03:13,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528925709] [2022-12-11 21:03:13,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:03:13,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 21:03:13,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:03:13,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 21:03:13,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-11 21:03:13,242 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 84 [2022-12-11 21:03:13,243 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 76 transitions, 425 flow. Second operand has 7 states, 7 states have (on average 63.42857142857143) internal successors, (444), 7 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:03:13,243 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:03:13,243 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 84 [2022-12-11 21:03:13,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:03:13,354 INFO L130 PetriNetUnfolder]: 21/162 cut-off events. [2022-12-11 21:03:13,355 INFO L131 PetriNetUnfolder]: For 211/305 co-relation queries the response was YES. [2022-12-11 21:03:13,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 537 conditions, 162 events. 21/162 cut-off events. For 211/305 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 448 event pairs, 0 based on Foata normal form. 5/167 useless extension candidates. Maximal degree in co-relation 473. Up to 47 conditions per place. [2022-12-11 21:03:13,356 INFO L137 encePairwiseOnDemand]: 75/84 looper letters, 20 selfloop transitions, 5 changer transitions 27/100 dead transitions. [2022-12-11 21:03:13,356 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 100 transitions, 789 flow [2022-12-11 21:03:13,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-11 21:03:13,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-11 21:03:13,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 654 transitions. [2022-12-11 21:03:13,357 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7785714285714286 [2022-12-11 21:03:13,358 INFO L295 CegarLoopForPetriNet]: 78 programPoint places, 23 predicate places. [2022-12-11 21:03:13,358 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 100 transitions, 789 flow [2022-12-11 21:03:13,358 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 73 transitions, 443 flow [2022-12-11 21:03:13,358 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 73 transitions, 443 flow [2022-12-11 21:03:13,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 63.42857142857143) internal successors, (444), 7 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:03:13,359 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:03:13,359 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:03:13,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-11 21:03:13,359 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 21:03:13,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:03:13,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1756233774, now seen corresponding path program 1 times [2022-12-11 21:03:13,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:03:13,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512527401] [2022-12-11 21:03:13,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:03:13,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:03:13,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:03:13,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 21:03:13,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:03:13,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512527401] [2022-12-11 21:03:13,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512527401] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:03:13,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:03:13,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 21:03:13,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474443694] [2022-12-11 21:03:13,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:03:13,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 21:03:13,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:03:13,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 21:03:13,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-11 21:03:13,457 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 84 [2022-12-11 21:03:13,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 73 transitions, 443 flow. Second operand has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 6 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:03:13,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:03:13,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 84 [2022-12-11 21:03:13,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:03:13,553 INFO L130 PetriNetUnfolder]: 116/384 cut-off events. [2022-12-11 21:03:13,553 INFO L131 PetriNetUnfolder]: For 340/375 co-relation queries the response was YES. [2022-12-11 21:03:13,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 957 conditions, 384 events. 116/384 cut-off events. For 340/375 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1823 event pairs, 2 based on Foata normal form. 11/389 useless extension candidates. Maximal degree in co-relation 889. Up to 106 conditions per place. [2022-12-11 21:03:13,555 INFO L137 encePairwiseOnDemand]: 75/84 looper letters, 17 selfloop transitions, 7 changer transitions 17/99 dead transitions. [2022-12-11 21:03:13,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 99 transitions, 592 flow [2022-12-11 21:03:13,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 21:03:13,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 21:03:13,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 644 transitions. [2022-12-11 21:03:13,557 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8518518518518519 [2022-12-11 21:03:13,557 INFO L295 CegarLoopForPetriNet]: 78 programPoint places, 25 predicate places. [2022-12-11 21:03:13,557 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 99 transitions, 592 flow [2022-12-11 21:03:13,558 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 82 transitions, 524 flow [2022-12-11 21:03:13,559 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 82 transitions, 524 flow [2022-12-11 21:03:13,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 6 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:03:13,559 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:03:13,559 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:03:13,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-11 21:03:13,559 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 21:03:13,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:03:13,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1218981205, now seen corresponding path program 1 times [2022-12-11 21:03:13,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:03:13,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151508207] [2022-12-11 21:03:13,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:03:13,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:03:13,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:03:13,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 21:03:13,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:03:13,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151508207] [2022-12-11 21:03:13,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151508207] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:03:13,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:03:13,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-11 21:03:13,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895284782] [2022-12-11 21:03:13,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:03:13,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-11 21:03:13,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:03:13,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-11 21:03:13,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-11 21:03:13,745 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 84 [2022-12-11 21:03:13,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 82 transitions, 524 flow. Second operand has 7 states, 7 states have (on average 68.57142857142857) internal successors, (480), 7 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:03:13,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:03:13,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 84 [2022-12-11 21:03:13,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:03:13,915 INFO L130 PetriNetUnfolder]: 37/216 cut-off events. [2022-12-11 21:03:13,915 INFO L131 PetriNetUnfolder]: For 371/409 co-relation queries the response was YES. [2022-12-11 21:03:13,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 216 events. 37/216 cut-off events. For 371/409 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 808 event pairs, 4 based on Foata normal form. 11/226 useless extension candidates. Maximal degree in co-relation 551. Up to 68 conditions per place. [2022-12-11 21:03:13,916 INFO L137 encePairwiseOnDemand]: 75/84 looper letters, 13 selfloop transitions, 9 changer transitions 25/105 dead transitions. [2022-12-11 21:03:13,916 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 105 transitions, 710 flow [2022-12-11 21:03:13,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-11 21:03:13,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-11 21:03:13,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 849 transitions. [2022-12-11 21:03:13,933 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8422619047619048 [2022-12-11 21:03:13,933 INFO L295 CegarLoopForPetriNet]: 78 programPoint places, 34 predicate places. [2022-12-11 21:03:13,933 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 105 transitions, 710 flow [2022-12-11 21:03:13,934 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 108 places, 80 transitions, 560 flow [2022-12-11 21:03:13,934 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 80 transitions, 560 flow [2022-12-11 21:03:13,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.57142857142857) internal successors, (480), 7 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:03:13,935 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 21:03:13,935 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:03:13,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-11 21:03:13,935 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-11 21:03:13,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 21:03:13,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1936017796, now seen corresponding path program 1 times [2022-12-11 21:03:13,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 21:03:13,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509791828] [2022-12-11 21:03:13,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 21:03:13,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 21:03:13,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 21:03:14,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 21:03:14,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 21:03:14,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509791828] [2022-12-11 21:03:14,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509791828] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 21:03:14,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 21:03:14,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-11 21:03:14,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288396182] [2022-12-11 21:03:14,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 21:03:14,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-11 21:03:14,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 21:03:14,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-11 21:03:14,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-11 21:03:14,120 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 84 [2022-12-11 21:03:14,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 80 transitions, 560 flow. Second operand has 8 states, 8 states have (on average 68.5) internal successors, (548), 8 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:03:14,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 21:03:14,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 84 [2022-12-11 21:03:14,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 21:03:14,283 INFO L130 PetriNetUnfolder]: 8/98 cut-off events. [2022-12-11 21:03:14,283 INFO L131 PetriNetUnfolder]: For 411/438 co-relation queries the response was YES. [2022-12-11 21:03:14,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 98 events. 8/98 cut-off events. For 411/438 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 196 event pairs, 0 based on Foata normal form. 9/107 useless extension candidates. Maximal degree in co-relation 258. Up to 15 conditions per place. [2022-12-11 21:03:14,284 INFO L137 encePairwiseOnDemand]: 76/84 looper letters, 0 selfloop transitions, 0 changer transitions 73/73 dead transitions. [2022-12-11 21:03:14,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 73 transitions, 506 flow [2022-12-11 21:03:14,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-11 21:03:14,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-11 21:03:14,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 897 transitions. [2022-12-11 21:03:14,285 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8214285714285714 [2022-12-11 21:03:14,286 INFO L295 CegarLoopForPetriNet]: 78 programPoint places, 34 predicate places. [2022-12-11 21:03:14,286 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 73 transitions, 506 flow [2022-12-11 21:03:14,286 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2022-12-11 21:03:14,286 INFO L495 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2022-12-11 21:03:14,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 68.5) internal successors, (548), 8 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 21:03:14,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-11 21:03:14,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-11 21:03:14,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-11 21:03:14,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-11 21:03:14,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-11 21:03:14,289 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 21:03:14,291 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-11 21:03:14,291 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-11 21:03:14,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.12 09:03:14 BasicIcfg [2022-12-11 21:03:14,295 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-11 21:03:14,295 INFO L158 Benchmark]: Toolchain (without parser) took 4785.64ms. Allocated memory was 231.7MB in the beginning and 333.4MB in the end (delta: 101.7MB). Free memory was 206.6MB in the beginning and 205.4MB in the end (delta: 1.2MB). Peak memory consumption was 103.4MB. Max. memory is 8.0GB. [2022-12-11 21:03:14,296 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 231.7MB. Free memory is still 208.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-11 21:03:14,296 INFO L158 Benchmark]: CACSL2BoogieTranslator took 364.55ms. Allocated memory is still 231.7MB. Free memory was 206.1MB in the beginning and 183.0MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-12-11 21:03:14,296 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.03ms. Allocated memory is still 231.7MB. Free memory was 183.0MB in the beginning and 180.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-11 21:03:14,296 INFO L158 Benchmark]: Boogie Preprocessor took 22.89ms. Allocated memory is still 231.7MB. Free memory was 180.9MB in the beginning and 179.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-11 21:03:14,296 INFO L158 Benchmark]: RCFGBuilder took 307.88ms. Allocated memory is still 231.7MB. Free memory was 179.3MB in the beginning and 165.7MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-11 21:03:14,297 INFO L158 Benchmark]: TraceAbstraction took 4042.31ms. Allocated memory was 231.7MB in the beginning and 333.4MB in the end (delta: 101.7MB). Free memory was 164.7MB in the beginning and 205.4MB in the end (delta: -40.8MB). Peak memory consumption was 61.4MB. Max. memory is 8.0GB. [2022-12-11 21:03:14,298 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 231.7MB. Free memory is still 208.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 364.55ms. Allocated memory is still 231.7MB. Free memory was 206.1MB in the beginning and 183.0MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 43.03ms. Allocated memory is still 231.7MB. Free memory was 183.0MB in the beginning and 180.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.89ms. Allocated memory is still 231.7MB. Free memory was 180.9MB in the beginning and 179.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 307.88ms. Allocated memory is still 231.7MB. Free memory was 179.3MB in the beginning and 165.7MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 4042.31ms. Allocated memory was 231.7MB in the beginning and 333.4MB in the end (delta: 101.7MB). Free memory was 164.7MB in the beginning and 205.4MB in the end (delta: -40.8MB). Peak memory consumption was 61.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.9s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 430 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 430 mSDsluCounter, 552 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 413 mSDsCounter, 45 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 545 IncrementalHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 45 mSolverCounterUnsat, 139 mSDtfsCounter, 545 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 124 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=607occurred in iteration=4, InterpolantAutomatonStates: 99, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 2955 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 493 NumberOfCodeBlocks, 493 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 484 ConstructedInterpolants, 0 QuantifiedInterpolants, 1558 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-11 21:03:14,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...